光-光散射中的偏振效应：Euler-Heisenberg与Born-Infeld
Polarization effects in light-by-light scattering: Euler-Heisenberg versus Born-Infeld
摘要：
非偏振光的光散射的微分截面的角度依赖性在最终偏振上相加，在量子电动力学的任何低能有效理论中以及在玻恩-因菲尔德电动力学中是相同的。在本文中，我们推导出一般表达式的偏振相关的低能散射振幅，包括一个假设的宇称破坏的情况。这些评估与带电标量或旋量粒子，这给显着不同的极化效应的量子电动力学。普通的量子电动力学被发现表现出相当复杂的线性极化极化模式，而超对称量子电动力学和玻恩-因菲尔德电动力学给出了特别简单的形式。
英文摘要：
The angular dependence of the differential cross section of unpolarized light-by-light scattering summed over final polarizations is the same in any low-energy effective theory of quantum electrodynamics and also in Born-Infeld electrodynamics. In this paper we derive general expressions for polarization-dependent low-energy scattering amplitudes, including a hypothetical parity-violating situation. These are evaluated for quantum electrodynamics with charged scalar or spinor particles, which give strikingly different polarization effects. Ordinary quantum electrodynamics is found to exhibit rather intricate polarization patterns for linear polarizations, whereas supersymmetric quantum electrodynamics and Born-Infeld electrodynamics give particularly simple forms.
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